public static void ApplySafety(this IApplicable applicable)
{
if (!applicable.IsApplied)
{
applicable.Apply();
}
}
internal static bool Apply(out object answer, ref Control expression, ref Environment environment, object evop, object [] evargs)
{
IApplicable op = evop as IApplicable;
if (op == null)
{
throw new NotImplementedException("Application of non-procedure object.");
}
return(op.Apply(out answer, ref expression, ref environment, evargs));
}